/Engine/Source/Runtime/ApplicationCore/Public/GenericPlatform/GenericPlatformInputDeviceMapper.h
Maps the given Input Device to the given userID. This will broadcast the OnInputDeviceConnectionChange delegate. This should be called by the platform's implementation.
True if the input device was successfully mapped
virtual bool Internal_MapInputDeviceToUser ( [FInputDeviceId](API\Runtime\Core\Misc\FInputDeviceId) DeviceId, [FPlatformUserId](API\Runtime\Core\Misc\FPlatformUserId) UserId, EInputDeviceConnectionState ConnectionState )